why does it shake?

[Blk TYphoon]

I have a 93 typhoon with 100,000mi on it and when i get to speeds upwards of about 70 the thing shakes and vibrates and gets much worse as I gain speed. I was told that it may be my idler arms. Was this guy right?

 

[GM TURBO]

I'd guess wheel balance.

 

[skata]

more than likely wheel balance, or maybe driveshafts out of balance(worn u-joints).

a bad idler arm might cause the truck to wander or excess tire wear, cause it throws the truck out of alignment.